Window.



L. FL'RICHER.

WINDOW.

APPLICATION FILED OCT. 28, 1916.

PatentedLApn30J918.

2 SHEETS-SHEET I.

L. F. RICHER.

WINDOW.

APPLICATION FILED OCT. 28, l9l6.

Patented Apr. 30, 1918.

2 SHEETS-SHEET 2.

" taea'aaa. v

specification of letters Patent.

Patented Apt". a rat.

Application filed Octgber 2t, 1916. rial No. 1,14%.

3 To all whom it may concern:

e it known that 1, Louis F. Brown, a subject of the King of Great Britain residing at Montreal, in the Province of Quebec, Dominion of- Canada, have invented new and useful Improvements in Windows, of which the following is a specification. i

In order to'more clearly disclose the construction, operation, and use of the invention, reference should be had tothe accompanying drawings forming part of the present application. Throughout the several figures of the drawings like reference characters designate the same parts.

In the drawings Figure 1 is a front view of the invention, applied, .with the window casm partly removed to show the counter ba anping devices;

Fig. -2 is a cross section on line 22 of Fig; 1, with the lower sash raised and swung partly open;

Fig. 3 is an enlarged horizontal cross section through the counter balancing devices,

Fig. 4 is a side view of Fig. 3.

Fig. 5 is a cross section through the meetin ralls,

Fig. 6 is a guide, and,

Fig. 7 is a like view of the rack-plate. The main objects of the invention are to provide a simple, compact, e'ficient, durable, and economical window which will be both weather tight and rattle proof.

Another object is to provide a double winperspective view of the rack dow construction which may be manipulated All as a single window, avoiding the necessity of removing a complete set of windows each spring and replacing them each autumn, with the accompanying problems of storage and maintenance. Another object is to provide a double window construction in which the outer sash ma be easily and quickly moved away from t e-inner sash for cleaning purposes, and then as readily made fast to' the inner sash to operate therewith, as a unitary device. Other objects will appear from the following detailed description and claim.

Referring to the drawings in detail, 1 indicates an inside lower sash which is cut away throughout its entire edge to form a ledge 2 and a shoulder 3. Cooperating with this inside sash is an outsideier double sash 4 having its entire edge cut away to form a shoulder 5 Y and a le go 6. The shoulder of the inside sash rests against the ledge of the outside sash and the shoulder of the outside sash rests against the ledge of the inside sash, so that the frame of the inside sash is nested within the frame of the outside sash, the

shoulder of each engaging the shoulder of the other. At one vertical edge they are connected by suitable hinges 7 so that the outer sash may be swung toward or from the inside. sash, to permit cleaning of the panes. When closed together, or nested, as in full lines in Fig. 2, the two sashes may be manipulated as one and they will always be kept exalptly alined as-though they were a single sas The inside sash is hinged to theinsidevertical edge of a sliding plate 8 which is provided with a T shaped rack 9 extending its entire length and slidably mounted in the channel 10 of'a guide plate 11 suitably fixed to the inner vertical. wall of the window frame. This. guide plate is extended inwardly beyond,the channel 10, as at 12, to engage behind the head of the T of the rack 9 and retain it in the channel 10-see Fig. 3. Near the upper end of the channel, the guide plate is provided with a slot or openin 13 through which extends a small gear whee or cog 14 which meshes with the rack 9. This 00 is j ournaledin a small axle 15 with re ler bearings 16 interposed between it and the axle. This axle is formed with two shoulders 17 and 18,- each about one third of the length of the axle from the'nearest end, making each third of the axle of a difierent diameter. The third of least diameter is screw threaded to receive a threaded washer 19 which may be locked in osition by a pin 20 passed through the axle irectl behind the washer. This washer holds the roller bearings in place between the cog and the middle section of the axle, the first shoulder on the axle acting as a stop for the washer. At the opposite face of the cog is a second washer 21 engaging the second shoulder of the axle and the o posite ends of the roller bearings. Thus, t e two shoulder being washers form a age for the roller bearings. width. of the bottom edge of the outside 65 About midwa of the height of the window frame, the fil 'ng block 22 is cut out to receive the cog-see Figs. 3 and 4.-and slotted for insertion of the axle ends, as indicated in dotted lines in Figs. 1 and 4. To withstand the strain on the co and its axle, a strong U shaped metal brac Gt or strap 23 1s provided, its outer ends being slotted to receive the ends of the axle and small filling blocks 24 being provided to fill the slots and fit about one half of each end of the axle and complete the bearm s. In practice, the axle with its cog is sipped into place in the filling block 22, then the bracket is slipped into place about the axle ends and sohdl secured b screws or the l1ke 25 passe through ho es therein and turned into the filling block 22. Then the filling blocks 24 are slipped into the slots in the bracket and similarly secured in place. Between the bottom or closed end of the bracket and the outer edge of the cog is a eonslderable space through which travels the vertically movable counter balance weight 26 provided with a rack 27 which engages and meshes with the outer edge of the cog. This weight is rectangular in erom section nd has a snug sliding fit in the space between the cog and bottom of the bracket. Thus, the bracket acts as a uide for the weight and, also, as a means or keeping it in engagement wlth the rack of the counter weight. The weights are made hollow so that they maybe varled to suit circumstances, as clearly indicated in Fig. 2. From the preceding description it will be seen that by removing the screws of the bracket, the counter weight, bracket, and cog may all be removed without disturbing the sashes. Or, by removing the fastenings of the plate 11, the guide plate, sliding rack, and nested sashes may be removed as one combination, without disturbing the other parts.

The u per pair of sashes and its counterbalancing evices are the same as just described for the lower pair and, therefore, need not be further detailed here, except, of course, that the slot in the channel of the guide plate is near the lower end instead of near the upper end, and the counter weight is made slightly heavier than the sashto keep it raised, instead of being slightly lighter, as in the case of the lower sashes.

To make a perfectly weather tight joint around the vertical edges of the lower sashes, and at the bottom, thin strong metal weather strips 28, 29, and 30 are provided. The two str ps 28, at the left of theframe fit snugly into very narrow and comparatively deep kerfs or grooves 31, extending the entire length of t e left hand edge of each sash. The strip 29 fits snugly into a similar groove extending across the entire sash. If desired, two such strips and grooves may be used one in each sash, instead of only one. The strip 30 is formed as a thin narrowfiange at one edge of the sliding plate 8, and fits snugly into the kerf or groove 32 in the vertical face of the ri ht hand side of the outside sash. These strlps, fitting snugly into the grooves of the sashes make a perfectly weather tight construction, throughout, and, at the same time, make a perfectly rattle proof noiseless window. There is absolutely no chance for vibration or rattling movementof the sash.

The strips 28 extend to within a very short distance of top of the bottom sashes. When it is desired to swing the lower sashes horizontally inward, it is only necessary to raise them in the usual way, until their lower edges clear the tops of the strips 28 and then swing them in. As soon as they clear the strips 28 they may be lowered, if desired.

For the upper pair of sashes there 'are corresponding weather strips 33, 34;, and 35 and corresponding cooperating grooves or kerfs in the sashes. The strips 33 extend downwardly to within a short distance of the lower edge of the upper sashes. So, to swing the upper sashes inwardly, it is only \necessary to lower them until their u per edges pass below the lower ends 0 the weather strips, and then swing them in. But, in this lowered position, the upper sashes must be able, also, to clear the strips 28. Consequently, the framing and sashes of the upper sashes are made just thatmuch narrower than the framing and sashes of the lower sashessee Fig. 2.

The meeting rail of the inside top sash and the meeting rail of the outside lower sash each carry a U shaped weather strip 36 adapted to interlock, each with the other, as the two pairs of sashes are completely closed.

This completes the weather tight closure entirely around and between the two'pairs of sashes.

It is thought that the construction, operation, and use of the invention will be clear from the preceding detailed description.

Changes may be made in the construction, arrangement, and disposition of the several parts of the invention, within the scope of the eppended claim, without in any way departing from the field and scope of the invention, and it is meant to include all such within this application, wherein only a preferred form has been disclosed.

Having thus described my invention, what I claim and desire to protect by Letters Patent is In combination, an inside sash, an outside sash adapted to be nested therein and provided with a groove in one vertical edge, a sliding plate provided with a flange adapted to be seated in said groove and having a T head provided with a rack, hinge connec tions between said plate and said .inside sash, hinge connections between said inside and said outside sashes, a pinion engaging and operating said rack, means for driving said pinion, and means for guiding sai rack.

Signed at Montreal, Province of Quebec, this 20th day of October, 1916.

LOUIS F. RICHER. 

